<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul
          class="cart-list"
          v-for="goods in cartInfoList"
          :key="goods.sourceId"
        >
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="goods.isChecked"
              @click="changeTask(goods)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="goods.imgUrl" />
            <div class="item-msg">
              {{ goods.skuName }}
            </div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ goods.skuPrice }}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins">-</a>
            <input
              autocomplete="off"
              type="text"
              :value="goods.skuNum"
              minnum="1"
              class="itxt"
            />
            <a href="javascript:void(0)" class="plus">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ goods.skuPrice * goods.skuNum }}</span>
          </li>
          <li class="cart-list-con7">
            <a class="sindelet" @click="deleteItem(goods)">删除</a>
            <br />
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input
          class="chooseAll"
          type="checkbox"
          :checked="selectedAll"
          @click="chooseAll"
        />
        <span>全选</span>
      </div>
      <div class="option">
        <a @click="deleteItem">删除选中的商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">
          已选择 <span>{{ add }}</span
          >件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ totalPrice }}</i>
        </div>
        <div class="sumbtn">
          <a class="sum-btn" href="###" target="_blank">结算</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: 'ShopCart',
  data() {
    return {
      cartInfoList: [],
    };
  },
  async mounted() {
    //生成游客uuid 唯一标识符，才能进入购物车页面
    const result = await this.$API.shopCart.reqCartList();
    // console.log(result[0].cartInfoList);
    //获取数据信息
    this.cartInfoList = result[0].cartInfoList;
    // console.log(this.cartInfoList);
  },
  methods: {
    //点击时修改选中状态
    async changeTask(goods) {
      goods.isChecked = goods.isChecked ? 0 : 1;

      //通知后台数据状态发生改变
      await this.$API.shopCart.reqCheckCart(goods.sourceId, goods.isChecked);
    },

    //删除同id产品
    async deleteItem(goods) {
      const result = this.cartInfoList.filter((item) => {
        return item.sourceId !== goods.sourceId;
      });
      this.cartInfoList = result;
      await this.$API.shopCart.reqDelete(goods.sourceId);
    },
    //全选按钮
    async chooseAll(e) {
      //获取复选框点击数据状态，根据点击状态判断
      let arrId = [];
      let isChecked;
      this.cartInfoList.forEach((item) => {
        isChecked = item.isChecked;
        arrId.push(item.id);
        if (e.target.checked) {
          item.isChecked = 1;
        } else {
          item.isChecked = 0;
        }
      });
      //全选按钮
      await this.$API.shopCart.reqSelectAll(isChecked, arrId);
    },
    //批量删除按钮
    async deleteItem() {
      let skuIdList = [];
      this.cartInfoList = this.cartInfoList.filter((item) => {
        if (item.isChecked) {
          skuIdList.push(item.sourceId);
        }
        return item.isChecked !== 1;
      });
      console.log(skuIdList);
      const result = await this.$API.shopCart.reqDeleteChecked(skuIdList);
      // console.log(result);
    },
  },
  computed: {
    selectedAll() {
      return this.cartInfoList.every((item) => {
        return item.isChecked === 1;
      });
    },
    //总件数,计算属性要有返回值
    add() {
      let sum = 0;
      this.cartInfoList.forEach((item) => {
        let result = item.isChecked;
        if (result) {
          sum += item.skuNum;
        }
      });
      return sum;
    },
    //总价格
    totalPrice() {
     return  this.cartInfoList.reduce((pre,item) => {
        if (item.isChecked) {
          pre += item.skuPrice * item.skuNum
        }
        return pre
      },0);
      
    },
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;
  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }
  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;
      & > div {
        float: left;
      }
      .cart-th1 {
        width: 25%;
        input {
          vertical-align: middle;
        }
        span {
          vertical-align: middle;
        }
      }
      .cart-th2 {
        width: 25%;
      }
      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }
    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;
      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;
        & > li {
          float: left;
        }
        .cart-list-con1 {
          width: 15%;
        }
        .cart-list-con2 {
          width: 35%;
          img {
            width: 82px;
            height: 82px;
            float: left;
          }
          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }
        .cart-list-con4 {
          width: 10%;
        }
        .cart-list-con5 {
          width: 17%;
          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
            text-decoration: none;
          }
          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 31px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
            text-decoration: none;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }
  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;
        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: 'Microsoft YaHei';
          background: #e1251b;
          overflow: hidden;
          text-decoration: none;
          &hover {
            color: white !important;
          }
        }
      }
    }
  }
}
</style>
